timm
/

Image Classification
timm
PyTorch
Safetensors
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  1. README.md +128 -0
  2. config.json +35 -0
  3. model.safetensors +3 -0
  4. pytorch_model.bin +3 -0
README.md ADDED
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+ ---
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+ tags:
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+ - image-classification
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+ - timm
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+ library_name: timm
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+ license: apache-2.0
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+ datasets:
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+ - imagenet-1k
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+ - imagenet-22k
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+ ---
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+ # Model card for caformer_s18.sail_in22k_ft_in1k
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+
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+ A CAFormer (a MetaFormer) image classification model. Pretrained on ImageNet-22k and fine-tuned on ImageNet-1k by paper authors.
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+
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+ ## Model Details
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+ - **Model Type:** Image classification / feature backbone
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+ - **Model Stats:**
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+ - Params (M): 26.3
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+ - GMACs: 4.1
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+ - Activations (M): 19.4
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+ - Image size: 224 x 224
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+ - **Papers:**
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+ - Metaformer baselines for vision: https://arxiv.org/abs/2210.13452
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+ - **Original:** https://github.com/sail-sg/metaformer
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+ - **Dataset:** ImageNet-1k
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+ - **Pretrain Dataset:** ImageNet-22k
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+
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+ ## Model Usage
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+ ### Image Classification
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+ ```python
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+ from urllib.request import urlopen
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+ from PIL import Image
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+ import timm
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+
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+ img = Image.open(urlopen(
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+ 'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
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+ ))
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+
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+ model = timm.create_model('caformer_s18.sail_in22k_ft_in1k', pretrained=True)
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+ model = model.eval()
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+
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+ # get model specific transforms (normalization, resize)
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+ data_config = timm.data.resolve_model_data_config(model)
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+ transforms = timm.data.create_transform(**data_config, is_training=False)
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+
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+ output = model(transforms(img).unsqueeze(0)) # unsqueeze single image into batch of 1
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+
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+ top5_probabilities, top5_class_indices = torch.topk(output.softmax(dim=1) * 100, k=5)
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+ ```
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+
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+ ### Feature Map Extraction
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+ ```python
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+ from urllib.request import urlopen
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+ from PIL import Image
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+ import timm
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+
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+ img = Image.open(urlopen(
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+ 'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
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+ ))
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+
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+ model = timm.create_model(
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+ 'caformer_s18.sail_in22k_ft_in1k',
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+ pretrained=True,
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+ features_only=True,
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+ )
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+ model = model.eval()
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+
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+ # get model specific transforms (normalization, resize)
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+ data_config = timm.data.resolve_model_data_config(model)
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+ transforms = timm.data.create_transform(**data_config, is_training=False)
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+
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+ output = model(transforms(img).unsqueeze(0)) # unsqueeze single image into batch of 1
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+
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+ for o in output:
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+ # print shape of each feature map in output
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+ # e.g.:
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+ # torch.Size([1, 64, 56, 56])
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+ # torch.Size([1, 128, 28, 28])
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+ # torch.Size([1, 320, 14, 14])
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+ # torch.Size([1, 512, 7, 7])
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+
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+ print(o.shape)
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+ ```
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+
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+ ### Image Embeddings
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+ ```python
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+ from urllib.request import urlopen
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+ from PIL import Image
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+ import timm
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+
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+ img = Image.open(urlopen(
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+ 'https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/beignets-task-guide.png'
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+ ))
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+
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+ model = timm.create_model(
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+ 'caformer_s18.sail_in22k_ft_in1k',
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+ pretrained=True,
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+ num_classes=0, # remove classifier nn.Linear
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+ )
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+ model = model.eval()
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+
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+ # get model specific transforms (normalization, resize)
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+ data_config = timm.data.resolve_model_data_config(model)
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+ transforms = timm.data.create_transform(**data_config, is_training=False)
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+
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+ output = model(transforms(img).unsqueeze(0)) # output is (batch_size, num_features) shaped tensor
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+
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+ # or equivalently (without needing to set num_classes=0)
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+
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+ output = model.forward_features(transforms(img).unsqueeze(0))
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+ # output is unpooled, a (1, 512, 7, 7) shaped tensor
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+
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+ output = model.forward_head(output, pre_logits=True)
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+ # output is a (1, num_features) shaped tensor
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+ ```
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+
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+ ## Model Comparison
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+ Explore the dataset and runtime metrics of this model in timm [model results](https://github.com/huggingface/pytorch-image-models/tree/main/results).
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+
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+ ## Citation
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+ ```bibtex
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+ @article{yu2022metaformer_baselines,
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+ title={Metaformer baselines for vision},
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+ author={Yu, Weihao and Si, Chenyang and Zhou, Pan and Luo, Mi and Zhou, Yichen and Feng, Jiashi and Yan, Shuicheng and Wang, Xinchao},
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+ journal={arXiv preprint arXiv:2210.13452},
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+ year={2022}
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+ }
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+ ```
config.json ADDED
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+ {
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+ "architecture": "caformer_s18",
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+ "num_classes": 1000,
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+ "num_features": 512,
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+ "pretrained_cfg": {
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+ "tag": "sail_in22k_ft_in1k",
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+ "custom_load": false,
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+ "input_size": [
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+ 3,
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+ 224,
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+ 224
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+ ],
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+ "fixed_input_size": false,
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+ "interpolation": "bicubic",
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+ "crop_pct": 1.0,
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+ "crop_mode": "center",
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+ "mean": [
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+ 0.485,
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+ 0.456,
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+ 0.406
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+ ],
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+ "std": [
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+ 0.229,
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+ 0.224,
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+ 0.225
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+ ],
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+ "num_classes": 1000,
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+ "pool_size": [
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+ 7,
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+ 7
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+ ],
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+ "first_conv": "stem.conv",
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+ "classifier": "head.fc.fc2"
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+ }
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+ }
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